Genesis Timber Specs

Handy formulae and conversions

Timber

mm = in


m    = ft
25.44 mm
3.2808 ft
=
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1 inch
1 metre
4.672 m 3
35.3147 ft
3
165 ft
3 
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=

1 Std
1 m
3
1 Std
6'
7'
8'
9'
10'

19 mm
22 mm
25 mm
32 mm
38 mm
47 mm
50 mm
63 mm
75 mm
100 mm

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1.82 m  Metric equivalent: 1.8 m
2.13 m  Metric equivalent: 2.1 m
2.44 m  Metric equivalent: 2.4 m
2.74 m  Metric equivalent: 2.7 m
3.05 m  Metric equivalent: 3.0 m

3/4"
7/8"
1"
1.
1/4"
1.
1/2"
1.
7/8"
2"
2.
1/2"
3"
4"

To Calculate price per Lineal metre from price per m 3:

Enter price per m 3  x T (in m) x W (in m) = price per lineal metre

Sheet materials

2440 x 1220 mm sheet (metric 8' x 4') = 2.9768 m 2

3.3593 sheets = 10 m 2

To calculate price per sheet from price per 10m 2 (for 2440 x 1220)

Enter price per 10 m 2  3.3593 = price per sheet

Hoppus measure

For hardwood sawlogs and veneer logs (and occasionally for softwood sawlogs) some roundwood merchants, sawmillers and contractors continue to use imperial units in which volume is expressed in hoppus feet (hft), derived as follows:



Hoppus Volume   =  (Mid Quarter Girth in ins.)2  X  Length (ft)
(hft)
144

The girth tape used is calibrated in quarter girth (QG) in inches, and the cross-sectional area is approximated by squaring the QG and dividing by 144. One Hoppus foot = 1.273 true ft3; 27.74 h ft = 1 m3; and 1 h ft = 0.03605m3. A Hoppus foot is about 21% short of a true ft3 - the reduction helping to compensate the processor for his loss in converting roundwood to sawnwood. The following additional conversion factors should be noted:


1 cm diameter = 0.31 ins. QG;
1 hectare (ha) = 2.47 acres (ac); 1 ac = 0.405 ha;
1 m3/ha = 11.2 h ft/ac; and 1 h ft/ac = 0.089 m3 ha.

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